Add verbose output option

hrm.js

@@ -1,11 +1,12 @@
 const compile = require( './compile' )
 
-module.exports = ( source, inbox, floor ) => {
+module.exports = ( source, inbox, floor, verbose ) => {
   const outbox = []
   const memory = []
 
   var accumulator = null
   var counter = 0
+  var steps = 0
 
   Object.keys( floor || {} ).forEach( key =>
     memory[ key ] = floor[ key ]
@@ -14,7 +15,9 @@ module.exports = ( source, inbox, floor ) => {
   const cpu = {
     INBOX: () => {
       if( inbox.length === 0 ){
-        counter = Infinity
+        counter = Infinity        
+        steps--
+
         return
       }
 
@@ -76,10 +79,22 @@ module.exports = ( source, inbox, floor ) => {
 
     const instr = program[ i ]
 
-    cpu[ instr[ 0 ] ]( instr[ 1 ] )  
+    cpu[ instr[ 0 ] ]( instr[ 1 ] )
+
+    steps++
 
     return execute( program, counter )
   }
 
-  return execute( compile( source ), 0 )    
+  const program = compile( source )
+
+  const result = execute( program, 0 )    
+
+  return verbose ? {
+    accumulator,
+    memory,
+    outbox: result,
+    size: program.length,
+    steps
+  } : result
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hrm-cpu",
-  "version": "0.0.4",
+  "version": "0.0.7",
   "description": "Run Human Resources Machine programs in JavaScript",
   "main": "hrm.js",
   "directories": {

readme.md

@@ -36,6 +36,18 @@ console.log( outbox )
 ```
 
 Also see examples directory or try running the tests with mocha
+
+If you have no initial floor state (like the early levels) you can omit floor:
+
+```javascript
+const outbox = hrm( source, inbox )
+```
+
+You can also get verbose output (for checking your size and steps):
+
+```javascript
+const info = hrm( source, inbox, floor, true )
+```
 
 ### TODO